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Severe Thunderstorms over the Plains, Heavy Rain Threat Continues over Portions of the Mississippi Valley

Heavy rainfall with localized flooding will remain possible over portions of the Mississippi Valley and the Plains through midweek. In addition, severe thunderstorms will be possible over the southern and central Plains. Some of the storms could contain damaging winds and large hail. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78° N Lon: 89.25° W Elev: 400 ft.

Mostly Cloudy

79°F

26°C

Humidity 94%
Wind Speed S 7 mph
Barometer 29.99 in (1015.2 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 16 Aug 10:52 am CDT
Detailed forecast for

Union County

Today
Mostly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the upper 80s. South winds 5 to 10 mph.
Tonight
Partly cloudy in the evening then becoming mostly cloudy. A 40 percent chance of showers and thunderstorms. Lows in the mid 70s. South winds around 5 mph.
Thursday
Partly sunny with a 50 percent chance of showers and thunderstorms. Highs in the upper 80s. Southwest winds around 10 mph.
Thursday Night
Mostly clear. A 20 percent chance of showers and thunderstorms in the evening. Lows in the upper 60s. West winds 5 to 10 mph.
Friday
Mostly sunny. Highs in the upper 80s. Northwest winds 5 to 10 mph.
Friday Night
Partly cloudy. Lows in the upper 60s.
Saturday
Partly sunny with a 20 percent chance of showers and thunderstorms. Highs in the upper 80s.
Saturday Night
Mostly clear. Lows in the upper 60s.
Sunday
Mostly sunny. Highs in the upper 80s.
Sunday Night
Mostly clear. Lows around 70.
Monday
Partly sunny with a 20 percent chance of showers and thunderstorms. Highs around 90.
Monday Night
Mostly clear. A chance of showers and a slight chance of thunderstorms after midnight. Lows in the lower 70s. Chance of precipitation 30 percent.
Tuesday
Partly sunny with a 50 percent chance of showers and thunderstorms. Highs around 90.



Click Map For Forecast
340 AM CDT Wed Aug 16 2017
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database